In production code, the maximum number of packets is by default set to 200, so we should adopt the same behavior in tests. Bug: None Change-Id: I415790b7cd9fb170ea7ac94685cc6bbe14efac4d Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/178744 Reviewed-by: Sam Zackrisson <saza@webrtc.org> Commit-Queue: Ivo Creusen <ivoc@webrtc.org> Cr-Commit-Position: refs/heads/master@{#31646}